Turntable



. June-25, 1929. DlL ON 1,718,811

' TURNTABLE 4 Original Filed Sept. 5, 1927 4 Sheets-Sheet l iiTiiii .52o o 1% o o 0000 ATTOR N EY E. A. DILLON June 25, 1929.

TURNTABLE 4 Sheets-Sheet 2 Original Filed Sept. 3, 1927 E. A. DILLONJune 25, 1929.

TURNTABLE Original Filed Sept. 3, 192-7 4 Sheets-Sheet 3 a M H 5 3 E ais 0 e e 5 k a P 1 Z M 0 h MN 0/ h ve? Q 6 //l\\ w N v NW M QR r V//d///// /fl/ INVENTOR I BY V I O ATTORNEY E. A. DILLON June 25, 1929.

TURNTABLE 4 Sheets-Sheet 4 Original Filed Sept. 3, 1927 awzwzw,

ATTD R N EY Patented June 25, 1929.

UNITED STATES EARL A. DILLON OF SAN ANTONIO, TEXAS.

TURNTABLE.

Application filed September 3, 1927, Serial This invention relates toturntables and is an inuprovemen t upon. the subject matter this closedin my appending applicatiim Serial. No. 150 9536, filed Novenil i 6,1926.

Like the invention. refi red to, the present invention has for itsobject the provision of a turntable for automobiles, for use in garagesand other restricted places, such as warehouses, ill-mots and the like.

The primary object of the inventioi'i is to improve and simplify theturntable disclosed in the application inentioiual by reducing thenumber of parts and providing means of adjustment for the turntableplatform to insure ease of rotation, and to especially provirha meansfor controlling the operation of the turntable by the direction ofrotation of the wheels of an. automobile, so that the driver will not berequired to manually release or apply the turi'il'ahle brakes.

lVith the above and. other objects in View, the invention furtherincliules the following novel features and details of construction, tobe hereinafter more fully described, illustrated in the accompanyingdrawings and pointed. out in the appended claims.

Tn the drawings:

ll igure 1. is a. top plan view of a turntable constructed in accordancewith the invention.

Figure 2 is a bottom plan view of the turntable platform.

Figure 215 is a "tion on the line of Figure 1..

lligruro 4 is a fragnn-zntary bottom plan.

view of the circular track and its manner of connection with the centerbear-hag,

Figure 5 is an enlarged fragmentary section taken substantially on theline 5 5 of l igure 1 with the roller cover plate swunp downward so asto render the rollers inao tive.

Figure 6 is a like View showing the rollers uncovered.

Figure 7 is an enlarged fragmentary section taken. substantially on theline 'i'7 of Figure 1.

liteferring to the drawings in detail wherein like characters ofreference denote corresponding parts, the turn-table is mounted within asuitable pit 10 and its platform 11 is flush with the floor or surface12 which surrounds the pit. The platform 11 is supported by a centralbearing 18 and by rollers Renewed November 19, 1928.

14; which are spaced aroui'id and secured to the under face of theplatform 11.

The rollers 1 1 operate upon a track 15 and the latter is substantiallylu-shaped in. cross section soas to provide a vertically disposedcircular flllill il'u 1G. The center bearing 13 is formed of opposedbearing members 17 and 18, the former being secured to the inner ends ofradially disposed arms 19. The outer ends of these arms are secured tothe track 10 as shown at 20 and not only serve to secure the bearingmember 17 in place, but also serve to assemble the track 1:3, the latterbeing formed of segmental sections. The bearing member 17 isprovidedwith a seat or depression 21. to receive an anti-friction ball 22. Thebear-inn member 18 is secured to the under face of the platform 11 andis pro ided. with a recess 23 within. which is movably located a bearingblock 24:. This block is provided with a seat or depression to receivethe ball. 22 while an adjusting soreiv'filli extends through theplatform and bearing member 18 and enga es the bearing: block. lly meansof the screw 25, the block Zl: may be ad j ustably positioned so as toproperly distribute the weight of the platform to insure ease ofoperation, as will be hereinafter apparent.

Secured to the upper face of theplatfo1.m 1]. are spaced channel shafttracks or guides 2-6. These ides are provided withfopenings whichregister with openings 27 provided in the platform for the accommodationof rollers 28 and 29. These rollers are arranged in pairs as shown .in.the drawinn'." one pair being located at one end guide 26. These rollerscontrol the operation of the turntable and the mechanism controlled bythese rollers is duplicated. upon diametrically opposite sides of thecenter bearing. This mechanism is clearly shown in. lligure 2 of thedrawings and only onoof such mechanisms will be describecjl. The shaft30 of the roller 28 i'nounted in suitable bearings 31 secured to theunder face of the platform 11 and this shaft carries a beveled pinion 32which engages and drives a beveled pinion 3t) .niounted upon a shaft34:. This last mentioned shaft is journaled in suitable bearingsattached to the under face of the platform and has secured thereon abeveled. pinion 35. The pinion 35 engages the teeth of a rack 36provided around the upper edge of the flange 16 and when the endsanchored as at 41.

roller 28 is rotated, rotary movement will be imparted to the platform.The adjustment of the center bearing 13 is especially useful forproperly distributing the weight of the platform to insure properworking en agement between the pinions and' the rec I 36. The shaft 37of the roller 29 is mounted in suitable bearings 38 secured to the underface of the platform 11 and secured upon this shaft 37 is a brake drum39. A brake band 40 is arranged to engage the outer periphery of thisdrum and has one of its The other end of the band 40 is pivotallysecured as at 42 to one end of a weighted .arm 43, the said arm beingpivotally mounted as shown at 44. The tendency of the weighted arm 43 isto apply sufficient friction to the drum 39 to prevent accidentalrotation of the roller 29.

Pivotally mounted within each guide adjacent each of the rollers 29 asshown at 45, is a cover plate 46. This cover plate 1s normally held inelevated position by means of a weight 47, as shown in Figure 6 of thedrawings, but is capable of being swung down into position to cover therollers 28 and 29, as shown in Figure 5.

An automobile driven upon the platform will travel along the guides 26,one of the front Wheels of the automobile riding upward over the rollers28 and 29. The roller 28 will be momentarily partially rotated, but thisrotation will not be enough to cause rotary movement of the platform.Continued forward movement of the automobile will force the cover platedownward so as to permit the "wheel to ride over the plate. One of therear wheels of the automobile will ride over the roller 28 and occupy aposition over this roller and the roller 29 as shown in Figure 6 of thedrawings. The transmission mechanism of the automobile is put in reverseand when the rear wheel is rotated, the rollers 28 and 29 will berotated in the direction indicated by the arrows in Figure 6. As theweight of the arm 43 tends to tighten the brake bands 40, rotation ofthe roller 29 in the direction indicated by the arrow in Figure 6 andopposite to the direction indicated by the arrow in Figure 7, will tendto release this brake band and p'ermitfree rotation of the roller 29. Asthe roller 28 is rotated, rotary motion will be imparted to the platform11 through the gearing previously. described. After the platform hasbeen turned to the desired position, operation of the rear driving wheelof the automobile is stopped. The transmission'is then shifted so thatthe automobile may be driven forward, whereupon the tendency of theroller 29 will be to rotate in the direct-ion indicated by the arrow inFigure 7. The brake band. will thus have a. lendency to tighten andprevent rotation of the roller 29, so that the automobile may be drivenfrom the rollers. Forward movement of the automobile will press thecover plate 46 downward upon the platform, while the opposite frontwheel of the automobile will press the other cover plate downward so asto cover the rollers 28 and 29 and permit the automobile to pass overthese rollers without rotating the latter.

The invention is susceptible of various changes in its form, proportionsand minor details of construction and the right is here in reserved tomake such changes as properly fall within the scope of the appendedclaims.

Having described the invention what is claimed is 1. In combination witha turntable, a brake mechanism, means operated by the wheels of anautomobile when said wheels are rotating in one direction tosimultaneously release the brake mechanism and retate the turntable andmeans rendered active when the automobile wheels are rotating in anopposite direction to lock the turntable against rotary movement.

2. In combination with a turntable, mechanism to rotate said table,spaced rollers carried by the turntable for engagement by the drivewheels of an automobile, a brake mechanism, means associating one of therollers with the turntable rotating mechanism to operate the latter whenthe rollers are retated in one direction and means connecting the otherroller and brake mechanism to re lease the said brake mechanism when thedrive wheels are rotating in the referred to direction and to render thebrake mechanism active when. said wheels are rotating in an oppositedirection.

- 3. In combination with a turntable, means to rotate the turntable,Spaced means operated by the wheels of an automobile to coin trol theturntable rotating means, and means operated by the wheels of theautomobile to selectively render one of the wheel oper ated meansinactive.

4. In combination with a turntable, means to rotate the turntable,spaced means operated by the wheels of an automobile to control theturntable rotating means and pivotally mounted cover plates located inthe path of the wheels of the automobile to selectively cover the wheeloperated means.

In testimony whereof I aflix my signature.

EARL A. DILLON.

